Fully superconducting electro-magnetic low-speed direct-driven synchronous generator

Abstract

The invention discloses a fully superconducting electro-magnetic low-speed direct-driven synchronous generator, which sequentially comprises a stator core and a rotor core from the inside to the outside along the radial direction, wherein single-tooth-wound single-layer concentrated superconducting armature windings and single-tooth-wound single-layer concentrated superconducting exciting windings are alternately arranged in each stator slot of the stator core; and the generator also comprises a dewar flask for wrapping the single-tooth-wound single-layer concentrated superconducting armature windings and the single-tooth-wound single-layer concentrated superconducting exciting windings. According to the synchronous generator achieved by the invention, the reliability of a system is improved; exciting superconducting coils and armature superconducting windings are placed on the same stator by the provided structure; and compared with a conventional full-superconducting generator with the same capacity, the volume of a low-temperature container is greatly reduced and the cost of the low-temperature container and a refrigeration system thereof is reduced.

Description

technical field [0001] The invention belongs to the field of generators, and more specifically relates to a fully superconducting excitation low-speed direct-drive synchronous generator. Background technique [0002] Due to the limitations of the current-carrying capacity of conductors such as copper and aluminum or the performance of permanent magnets and ferromagnetic materials, the traditional motor has a large copper loss and iron loss, so its efficiency is difficult to further improve. In addition, due to the limitation of the heat dissipation capacity of the motor, the motor It is also difficult to further reduce the volume. Compared with traditional motors, superconducting motors have outstanding advantages. The current-carrying capacity of superconducting coils is dozens or even hundreds of times that of traditional conductors, so the magnetic load and line load of the motor can be several times that of conventional motors. Superconducting motors have extremely high...

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Problems solved by technology

[0007] The patent document (publication number US20090230690A1) discloses a superconducting winding installation structure, in which the superconducting motor is coupled with the fan through a gearbox. The principle of the superconducting motor adopts the same polarity generator, and only the excitation winding adopts Conductive material, placed in a cryogenic container, in this motor structure, the entire rotor is divided into 3 sections, only the slotted part at 2 ends can generate torque, so the torque density of the motor is limited; the stator core is divided into 2 sections along the axial direction , There is a ring-shaped excitation coil arranged in the middle of the two sections. The fixing and installation of the superconducting excitation coil are relatively complicated; the actual stator armature winding has 4 ends, and the space occupied by the ends is too large;

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